范德瓦尔斯层状物因包含着丰富的元素,所以形成了多种不同结构的晶体。其中,1984年Shechtman等人发现了准晶体的概念,即具有准周期平移序和禁止的旋转对称性的固体相。接着在1998年,Conrad等人发现了一种Ta1.6Te的稳定准晶体相,这引起 ...
准晶体超构表面(Quasicrystal metasurfaces)是一种二维人工光学材料,其亚波长超构原子以准周期平铺方式排列,由于其新颖的光学特性而受到广泛关注。据麦姆斯咨询报道,在最近的一项研究工作中,通过实验证明了一种双功能准晶体超构表面,可用于同时生成 ...
This new design breaks the mold by positioning these meta-atoms in a more complex, quasicrystal pattern. Quasicrystals, while ...
在数学的铺砌领域,寻找“爱因斯坦”是许多数学家追求了半个多世纪的一座“圣杯”。在“帽子”出现之前,数学家需要多种形状来组成非周期铺砌块。比如数学家发现的首个可以覆盖无限平面的非周期铺砌是由2万多种形状组成的。在后续的研究中,数学家们在逐渐地缩小这一数 ...
Determining the positions of the atoms in an icosahedral quasicrystal had previously been a considerable challenge. This study provides an accurate description of the three-dimensional atomic ...
Whereas the atoms in crystals repeat at regular intervals, like the squares of a chessboard, quasicrystal atoms do not. Instead, they do something rather more mysterious: quasicrystals can be ...
Physicists from the Cavendish Laboratory in Cambridge have created the first two-dimensional version of the Bose glass, a ...
A team from Cambridge has crafted a novel two-dimensional Bose glass, a phase of matter where all particles remain fixed in ...
Scientists and journalists share a core belief in questioning, observing and verifying to reach the truth. Science News reports on crucial research and discovery across science disciplines. We ...
The research leading to the discovery was published in Nature. Read the news story on the University website. The first report of a liquid quasicrystal was made by Professor Ungar and Dr Zeng in 2004.
A simple cavity-based technology capable of simultaneously measuring optical rotary dispersion and circular dichroism within milliseconds offers ultra-high sensitivity and unprecedented spectral ...
will lecture on quasicrystal materials; Sir Colin Humphreys (University of Cambridge, England) will speak on GaN and microscopy; and Karl Leo (King Abdullah University of Science and Technology—KAUST, ...